Originally Posted by steveboyslim

That is not from any of the Ford BD series of engines ot the FVA/FVC engine which is gear driven with the back half of the timming case cast into the head.
As already stated look like it is from the Zakspeed developed four cylinder turbo engine, the give away that it was used on a turbo engine is the 'O' ring groove on the inlet manifold face.
There were a few of the Mustang engines available in the US a few years ago.
Head is basically worthless, unless you have a need for a bare head casting.
Would make a good lamp stand.

Steve